Power supply control circuit and method of electric vehicle without low-voltage storage battery
A technology of power supply control circuit and low-voltage storage battery, which is applied in the direction of electric vehicles, circuits or fluid pipelines, electrical devices, etc., which can solve the problems of occupying the space of the whole vehicle and increasing the weight of the whole vehicle, so as to save space, reduce weight and cost , to achieve a convenient effect
Active Publication Date: 2020-09-29
CHERY COMML VEHICLE ANHUI
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Problems solved by technology
The entire vehicle in the prior art needs to provide a low-voltage battery to realize some start-up power supply of the vehicle, but the battery will occupy the space of the vehicle and increase the weight of the vehicle, especially for pure electric vehicles, the space and weight Control is very important for the whole vehicle
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[0021] The specific implementation manner of the present invention will be described in further detail below by describing the best embodiment with reference to the accompanying drawings.
[0022] The main purpose of this application is to replace the function of the low-voltage battery through hardware circuits by canceling the low-voltage battery. The electric vehicle does not have a power supply control circuit for the low-voltage battery. DCDC control circuit, the low-power consumption power supply module is used to generate low-power consumption trigger voltage, and its output terminal is connected to the key lock signal control module; the key lock signal control module is used to output low-voltage power supply, and its input terminals are respectively connected to control The output terminal of the module latches the control signal and the low-power trigger voltage, and its output terminal is connected to the control module; the input terminal of the control module and ...
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The invention discloses a power supply control circuit of an electric vehicle without a low-voltage storage battery. The control circuit comprises a low-power-consumption power supply module, a key latch signal control module, a control module and a vehicle-mounted DCDC control circuit. The low-power-consumption power supply module is used for generating a low-power-consumption trigger voltage, and an output end of the low-power-consumption power supply module is connected with the key latch signal control module; the key latch signal control module is used for outputting a low-voltage power supply and an input end of the key latch signal control module is connected with the output end of the control module to latch a control signal and a low-power consumption trigger voltage, and the output end is connected with the control module; the input end of the control module is connected with a key signal acquisition circuit, the output end of the control module outputs the latch control signal, a vehicle-mounted DCDC driving signal and a KL15 driving signal, and the vehicle-mounted DCDC driving signal is used for driving the vehicle-mounted DCDC control circuit to act so as to control the work of the vehicle-mounted DCDC; and the KL15 driving signal is used for driving a KL15 isolation output circuit to output a KL15 signal. A low-voltage storage battery of a traditional vehicle is omitted, a space of the whole vehicle is saved, and a circuit structure is safe and reliable.
Description
technical field [0001] The invention relates to the field of power supply control for pure electric vehicles, in particular to a power supply control circuit and method for electric vehicles without a low-voltage storage battery. Background technique [0002] The low-voltage battery plays an important role in starting the high and low voltage system of the car. Low-voltage batteries can not only provide electric energy for electric vehicles, but also store electric energy. "Power supply" and "storage" correspond to the discharge and charging process of the battery respectively. The battery is a DC power supply. Its main functions include: what is needed for the electrical equipment in the car The electric energy is all supplied by the battery, and when the electric vehicle is running normally, the on-board DCDC module charges the battery. The entire vehicle in the prior art needs to provide a low-voltage battery to realize some start-up power supply of the vehicle, but the ...
Claims
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IPC IPC(8): B60R16/033B60R16/02B60R16/023B60L3/00
CPCB60R16/033B60R16/02B60R16/023B60L3/00Y02T10/92Y02T10/70
Inventor 徐嘉周定华徐鹏刘昭才
Owner CHERY COMML VEHICLE ANHUI